Abstract: National occupational health standard—Diagnostic Criteria for Radiation-Induced Liver Diseases has been passed by the committee of diagnostic criteria for radiation disease and in line for approval by the Ministry of Health. Based on the extensive research of literature, this standard was enacted according to the relevant laws and regulations. It is mainly used for diagnosis of radiation-induced liver diseases, and it also can serve as a guide to diagnose liver disease induced by medical radiation. To implement this standard, and to diagnose and treat the radiation-induced liver diseases patient correctly and promptly, the contents of this standard were interpreted in this article.